Modeling tenement house only using photographs from random angles and mostly useless blueprints, what could go wrong... but I have to fix it
This is a nightmare to set up and many blender modellers would use a program called fSpy.

The program is free and allows you to set up your camera to photos perfectly. You'll need to also download the blender fspy addon. 

In fSpy, once you've set up your lines in the program, save your fSpy file then go to your blender file and import the fSpy file. File > Import > fspy and browse to find your file.

That will set up your camera perfectly. I do recommend watching the tutorial for using fSpy however.

Document tutorial:
https://fspy.io/tutorial/

Video tutorial:
https://lesterbanks.com/2018/11/perfect-camera-match-fspy/

Download fSpy:
https://github.com/stuffmatic/fSpy-Blender/releases

blender addon link:
https://github.com/stuffmatic/fSpy-Blender